ew 18: e18

Research Article

Power System Flexibility Metrics Evaluation and Power Ramping Analysis for High Variable Renewable Generation Shares

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  • @ARTICLE{10.4108/eai.13-7-2018.165282,
        author={M. Saber Eltohamy and M. Said Abdel Moteleb and Hossam Talaat and S. Fouad Mekhemer and Walid Omran},
        title={Power System Flexibility Metrics Evaluation and Power Ramping Analysis for High Variable Renewable Generation Shares},
        journal={EAI Endorsed Transactions on Energy Web: Online First},
        volume={},
        number={},
        publisher={EAI},
        journal_a={EW},
        year={2020},
        month={6},
        keywords={Power System Flexibility, Flexibility Metrics, Variable Renewable Generation (VRG), Power Ramping Analysis},
        doi={10.4108/eai.13-7-2018.165282}
    }
    
  • M. Saber Eltohamy
    M. Said Abdel Moteleb
    Hossam Talaat
    S. Fouad Mekhemer
    Walid Omran
    Year: 2020
    Power System Flexibility Metrics Evaluation and Power Ramping Analysis for High Variable Renewable Generation Shares
    EW
    EAI
    DOI: 10.4108/eai.13-7-2018.165282
M. Saber Eltohamy1,*, M. Said Abdel Moteleb2, Hossam Talaat3, S. Fouad Mekhemer3, Walid Omran4
  • 1: Research Assistant in Department of Power Electronics and Energy Conversion, Electronics Research Institute (postgraduate student at Ain Shams university), Joseph Tito St, Huckstep, Qism El-Nozha, Cairo Governorate, Egypt, 12622
  • 2: Professor in Department of Power Electronics and Energy Conversion, Electronics Research Institute, Joseph Tito St, Huckstep, Qism El-Nozha, Cairo Governorate, Egypt, 12622
  • 3: Professor in Department of Electrical Engineering, Future University in Egypt, Cairo, Egypt, 11835
  • 4: Associate Professor in Department of Electrical Engineering, Future University in Egypt (on leave from Ain Shams University), Cairo, Egypt, 11835
*Contact email: mohammed_saber@eri.sci.eg

Abstract

The increased penetrations from variable renewable generation (VRG), such as solar and wind, into power systems, growing the flexibility requirements for managing the uncertainty and variability of output power. These flexibility requirements can be achieved by many flexibility options. However, quantifying the flexibility available and required in a power system is a complicated problem. The paper reviews different flexibility metrics that measure the flexibility available from each conventional generator and that measure the flexibility available and needed by a power system at either planning and operational stages. Due to the dynamics of power systems, no flexibility metric has been taken as a standard. Accordingly, for high variable renewable generation shares, it is necessary to have a deeper understanding of power ramping scale as well as times when collective ramp events are most likely to occur. The paper introduces a method for power ramping analysis that will be demonstrated by analysing the output power of aggregated Belgian wind farms. In addition, the ramp characteristic indicators have been proposed for comparing the ramping behaviour of VRG in different years or between different countries.